Flood alarms

[Roomba]

Maybe this should be reworked or reconsidered, because it does very little to stop or slow down flooding, but makes it massively inconvenient to get around, especially once a significant amount of the station has been flooded. The relative dearth of crowbars on that map means there's not much people stuck in a flooded corridor can do, because often the fire alarm toggle is located far enough from the doors that there's not enough time to get to them before it simply reactivates.